LED String Light Addressing for Fast Control and Fault Feedback
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Solution Overview
Problem
Conventional LED string light sources face challenges with manual assembly difficulties due to the lack of signal feedback, leading to incorrect lighting colors and inefficient transmission speeds, and lack a smart warning function for faults in LED point light sources.
Innovation Solution
A control system for LED string light sources that uses address lines to connect smart driver chips in series based on natural numerical order, with an addressing module to assign temporary address codes, and a signal transmission module to ensure fast and efficient communication between decoder controllers and LED point light sources, enabling fault detection and smart warning functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If smart driver chips are manually assembled according to fixed address codes, then correct color display is maintained, but assembly complexity and time increase
Solution Approach 1:
The patent applies preliminary action by pre-assigning temporary addresses to LED point light sources during assembly based on their physical position, before the actual operation phase. This allows the system to automatically map fixed address codes to physical positions during the addressing phase, eliminating the need for manual ordering during assembly while ensuring correct color display during operation.
2Reliability
If fixed address codes are transmitted with color codes, then correct control is achieved, but signal transmission capacity is insufficient and speed is slow
Solution Approach 1:
The patent segments the signal transmission process into two distinct phases: an addressing phase where temporary addresses are assigned and stored in EEPROM, and an operation phase where only color codes are transmitted. This segmentation allows the system to maintain control accuracy by establishing correct address mappings beforehand, while achieving high-speed transmission during operation by sending only compact color code signals without redundant address information.
3Difficulty of detecting and measuring
If visual inspection is used to detect LED faults, then fault detection is possible, but smart warning function is not achieved
Solution Approach 1:
The patent implements feedback by having LED point light sources transmit status information back to the control device during the addressing phase. The control device receives and analyzes this feedback to automatically detect faults in individual LED point light sources, enabling smart warning functions that identify and report specific faulty components without requiring manual visual inspection.
Data Source
AI summary
A control system and control method for LED string light source with fast control speeds, occupy low signal transmission capacity, and can smartly detect faults in the LED string light source, wherein comprising an LED string light provided with a plurality of LED point light sources, a power line and data control line connected between the decoder controller and each LED point light source. Address lines are used in the LED string light source to connect all address pins of the smart driver chip in series based on the numerical order of the electrical connection of the decoder controller. The smart driver chip requires rewriting the temporary address once every power-on cycle. Since the chip has a signal feedback function, users do not need specialized personnel to effectively use the decoder controller to assess the status of the point light source.